Ive had this problem. There arent any, im afraid. I think this something to do with the way sound is implemented NT, which makes it difficult, if not impossible, to reroot the audio output to the pc speaker. Ive would dearly like someone to prove me wrong on this.

NT will not allow direct access to the PC speaker. If you do not have a soundcard, you will not be able to hear anything.

In 95 it was no problem, just add the PCspeaker driver and you got sound (crappy sound, but sound).

The very nature of this driver prohibits its use. A preemptive multitasking operating system will not allow enough CPU cycles to generate the sound. The sound is generated by pulse with modulation which requires 100% of CPU time while the sound is being played. Sound cards offload this to their DAC chips.
(Per www.ntfaq.com)

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